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when to put screws in the rims for slicks #915321
01/27/11 09:23 PM
01/27/11 09:23 PM
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IL . usa
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cjs69mope Offline OP
mopar
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What is the rule of thumb of when to put screws in the rims when using slicks ? what ET or power level or always?
Also what if you don't would it cause problems with valve stem on the tubes tearing off ?
thanks


1969 Dodge Charger 1969 Dodge Superbee
Re: when to put screws in the rims for slicks [Re: cjs69mope] #915322
01/27/11 09:27 PM
01/27/11 09:27 PM
Joined: Jan 2003
Posts: 2,275
Kissimmee, Florida
aarlucas Offline
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I think this is a matter of vehicle weight and power verses ET. I started screwing mine together when I seen the tire move on the rims. I marked both and watched them close. Mine started moving in the low 13's and MPH was 110. My car weighs 3800lbs too.

Re: when to put screws in the rims for slicks [Re: cjs69mope] #915323
01/27/11 09:29 PM
01/27/11 09:29 PM
Joined: Oct 2004
Posts: 8,165
Left Coast
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BobR Offline
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Quote:

What is the rule of thumb of when to put screws in the rims when using slicks ? what ET or power level or always?
Also what if you don't would it cause problems with valve stem on the tubes tearing off ?
thanks




If I use slicks I use screws-especially if you are using tubes.

Re: when to put screws in the rims for slicks [Re: BobR] #915324
01/27/11 09:36 PM
01/27/11 09:36 PM
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Ohio
Todd Offline
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Quote:

Quote:

What is the rule of thumb of when to put screws in the rims when using slicks ? what ET or power level or always?
Also what if you don't would it cause problems with valve stem on the tubes tearing off ?
thanks




If I use slicks I use screws-especially if you are using tubes.



Good question. Im new to this racing in a strait line and was wondering the same thing.

What if your not running tubes? Size of tire and pressure comes into play?

Re: when to put screws in the rims for slicks [Re: BobR] #915325
01/27/11 09:37 PM
01/27/11 09:37 PM
Joined: Feb 2005
Posts: 28,312
Cincinnati, Ohio
Challenger 1 Offline
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Quote:

Quote:

What is the rule of thumb of when to put screws in the rims when using slicks ? what ET or power level or always?
Also what if you don't would it cause problems with valve stem on the tubes tearing off ?
thanks




If I use slicks I use screws-especially if you are using tubes.







OT a little, Why use tubes anymore? Not being a smartazz as usual. Just asking? as I think tubeless is safer with screw in metal valve stems.

Re: when to put screws in the rims for slicks [Re: Challenger 1] #915326
01/27/11 09:45 PM
01/27/11 09:45 PM
Joined: Jan 2003
Posts: 4,852
KENTUCKY
69CHARGERMD Offline
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Personally i like running tubes,,,sidewall seems stiffer,,,tires hold air longer,,,not sure what the downside to tubes are,,,other than weight,,,,

Re: when to put screws in the rims for slicks [Re: 69CHARGERMD] #915327
01/27/11 10:00 PM
01/27/11 10:00 PM
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Benton, IL.
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DaveRS23 Offline
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I personally do not screw my rims since I stopped using tubes. Is there any reason anymore to screw the tires on unless you're running tubes?


Master, again and still
Re: when to put screws in the rims for slicks [Re: 69CHARGERMD] #915328
01/27/11 10:08 PM
01/27/11 10:08 PM
Joined: Feb 2005
Posts: 2,679
owt west
Thread Ender1 Offline
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Quote:

Personally i like running tubes,,,sidewall seems stiffer,,,tires hold air longer,,,not sure what the downside to tubes are,,,other than weight,,,,


Car should 60ft better without tubes from what i hear.

Re: when to put screws in the rims for slicks [Re: Thread Ender1] #915329
01/27/11 10:10 PM
01/27/11 10:10 PM
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Posts: 4,616
Kissimmee Fl.
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dusturbd340W5 Offline
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Quote:

Quote:

Personally i like running tubes,,,sidewall seems stiffer,,,tires hold air longer,,,not sure what the downside to tubes are,,,other than weight,,,,


Car should 60ft better without tubes from what i hear.




I can tell you my car 60s better without tubes and it was done 2 weekends back to back same tire and weather conditions.


70 duster full chassis super pro 416 CNC Indybrock heads 727 w/brake

best so far 1.212 60 6.219 in 1/8 at 110.88 9.768 at 137.81 1/4
Re: when to put screws in the rims for slicks [Re: dusturbd340W5] #915330
01/27/11 10:14 PM
01/27/11 10:14 PM
Joined: Feb 2004
Posts: 34,830
S.E. South Dakota !
bigdad Offline
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My car has gone 9.942 @ 135.9
weighs 3770 with me , best 60 so far was 139.9

I have no tubes, no screws, tires have never moved

6442259-64intulsa.jpg (85 downloads)
Re: when to put screws in the rims for slicks [Re: dusturbd340W5] #915331
01/27/11 10:16 PM
01/27/11 10:16 PM
Joined: Apr 2003
Posts: 1,627
anywhere@ anytime
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actionange Offline
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I run 9 x 28 M/T's with tubes on an 8 inch rim with 18 lbs of air. They aren't screwed to the rims. Been doing this for the past 6 seasons without any issues. The tubes keep the tire stiffer at launch and all the way down the track.

Re: when to put screws in the rims for slicks [Re: bigdad] #915332
01/27/11 10:18 PM
01/27/11 10:18 PM
Joined: Feb 2010
Posts: 1,377
Ohio
Todd Offline
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Quote:

My car has gone 9.942 @ 135.9
weighs 3770 with me , best 60 so far was 139.9

I have no tubes, no screws, tires have never moved




Awesome car!!! Love those early B's. What size are your tires and at what pressure?

Re: when to put screws in the rims for slicks [Re: Todd] #915333
01/27/11 10:24 PM
01/27/11 10:24 PM
Joined: Feb 2004
Posts: 34,830
S.E. South Dakota !
bigdad Offline
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Quote:

Quote:

My car has gone 9.942 @ 135.9
weighs 3770 with me , best 60 so far was 139.9

I have no tubes, no screws, tires have never moved




Awesome car!!! Love those early B's. What size are your tires and at what pressure?




16x32's seems to work best @ 8 3/4 lbs ..iffy tracks I drop it 1/4 lb

I'll get out in some cool spring air and it should pickup some more

Re: when to put screws in the rims for slicks [Re: Todd] #915334
01/27/11 10:26 PM
01/27/11 10:26 PM
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Posts: 587
IL . usa
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cjs69mope Offline OP
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So it is ok to run a tire that the manufacturer recommend a tube for without a tube ?


1969 Dodge Charger 1969 Dodge Superbee
Re: when to put screws in the rims for slicks [Re: cjs69mope] #915335
01/27/11 10:32 PM
01/27/11 10:32 PM
Joined: Feb 2004
Posts: 34,830
S.E. South Dakota !
bigdad Offline
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The main reason AFAIK for a tube is to keep the air from leaking out ?

My tires are stiff sidewall , and honestly they hardly leak air

I always ran tubes , and screws and bought into the wives tales myself .

Needed ? Maybe ..but so far so good here !!

Re: when to put screws in the rims for slicks [Re: bigdad] #915336
01/27/11 10:41 PM
01/27/11 10:41 PM
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Posts: 1,284
okla.
sam64 Offline
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okla.
bigdad i don't know if you caught a look at the maroon 65 coronet 500 at tulsa ,i think high 9s.well she popped a slick off the bead on launch at mokan,it was the right rear and it launched hard left ending up in the left lane gaurd rail facing the starting line,not a lot of damage but screws would have saved the day there.they were running slicks no tubes.

Re: when to put screws in the rims for slicks [Re: sam64] #915337
01/27/11 10:47 PM
01/27/11 10:47 PM
Joined: Jun 2010
Posts: 3,112
LONG ISLAND
fishy340 Offline
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I'D SAY 10'S, i think it would look funny on a 13 sec car,,,like the guys that have a parachute on 12 sec cars

Re: when to put screws in the rims for slicks [Re: sam64] #915338
01/27/11 10:51 PM
01/27/11 10:51 PM
Joined: Feb 2004
Posts: 34,830
S.E. South Dakota !
bigdad Offline
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They had bead locks on it in Tulsa




Meh'

I don't know , I find it hard to believe that 5-6 little #10 screws with the tapered end sticking into the tire bead maybe and 1/8 of an inch matters in anyway

But, it is up to those to decide for themselves

My tires have never moved any, none, zero,zip,zilch,nada

But they rims are 15 inches wide and the tires are 16 inches wide so that may matter too

Re: when to put screws in the rims for slicks [Re: cjs69mope] #915339
01/27/11 11:05 PM
01/27/11 11:05 PM
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Az
Crizila Offline
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There is no answer to this question. Too many variables. Monitor them. When you see them start to slip on the wheel, thats the time to screwem.


Fastest 300
Re: when to put screws in the rims for slicks [Re: cjs69mope] #915340
01/27/11 11:14 PM
01/27/11 11:14 PM
Joined: Nov 2007
Posts: 1,600
Alberta Canada
StrokerAspen Offline
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Quote:

What is the rule of thumb of when to put screws in the rims when using slicks ? what ET or power level or always?
Also what if you don't would it cause problems with valve stem on the tubes tearing off ?
thanks




We talked about putting screws in wheels at the Dave Morgan Chassis Seminar that I attended. There are a lot of factors to consider that get over looked. Things I would have never thought of.

For starters, You want to "Index" your screws. Basically, where ever you put a screw on the front side of the wheel, make sure you put the screw on the back of the wheel directly across from the screw on the front of the wheel. If the screws are staggered , this will cause the car to "wonder". Mis-aligned (staggered) screws tend to want to "twist" the tire, as the tire is being pulled from those points at where it is screwed to the rim.

Here is the best picture I could find in my library. SORRY it isn't a Mopar.

You can see that the wrinkle is pulling from where the screw is on the wheel.



Second, how many screws do you put in the wheel? That depends on how big or small you want the "paddle" of the tire to be. Watch some of the high horsepower cars, and the tracks they make out of the whole. you can see the tire is "paddling" the ground. If the screws are further apart, the "paddle" is bigger, the closer the screws are, the smaller the paddle it.

for example....

5 screws around the diameter of the wheel will make for large paddles, but fewer paddles (4 paddles)

10 screws around the diameter of the wheel will make for smaller paddles, but more paddles (9 paddles)

What is the right amount of screws for a car? That I don't know. I personally haven't run screws. My tires seem to hook up just fine with out them.

-Kenny

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